package com.zzyl.nursing.service.impl;

import java.util.Collections;
import java.util.List;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.date.LocalDateTimeUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.db.PageResult;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zzyl.common.constant.Constants;
import com.zzyl.common.exception.base.BaseException;
import com.zzyl.common.utils.IDCardUtils;
import com.zzyl.common.utils.SecurityUtils;
import com.zzyl.nursing.domain.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.github.pagehelper.PageHelper;
import com.zzyl.common.core.domain.entity.SysUser;
import com.zzyl.common.exception.base.BaseException;
import com.zzyl.common.utils.SecurityUtils;
import com.zzyl.nursing.vo.NursingTaskDetailVO;
import com.zzyl.nursing.vo.NursingTaskVO;
import org.springframework.beans.BeanUtils;
import com.zzyl.common.utils.SecurityUtils;
import com.zzyl.nursing.dto.CancelNursingTaskDto;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.zzyl.nursing.dto.TaskDto;
import com.zzyl.nursing.dto.pageDto;
import com.zzyl.nursing.mapper.NursingTaskMapper;
import com.zzyl.nursing.service.ICheckInConfigService;
import com.zzyl.nursing.service.ICheckInService;
import com.zzyl.nursing.service.INursingElderService;
import com.zzyl.nursing.service.INursingTaskService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.zzyl.nursing.vo.pageVO;
import com.zzyl.serve.domain.NursingLevel;
import com.zzyl.serve.domain.NursingProject;
import com.zzyl.serve.service.INursingLevelService;
import com.zzyl.serve.service.INursingPlanService;
import com.zzyl.serve.service.INursingProjectService;
import com.zzyl.serve.vo.NursingPlanVo;
import com.zzyl.serve.vo.NursingProjectPlanVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 护理任务Service业务层处理
 *
 * @author zzyl
 * @date 2025-10-29
 */
@Service
public class NursingTaskServiceImpl extends ServiceImpl<NursingTaskMapper, NursingTask> implements INursingTaskService {
    @Autowired
    private NursingTaskMapper nursingTaskMapper;
    @Autowired
    private ICheckInConfigService checkInConfigService;
    @Autowired
    private ICheckInService checkInService;
    @Autowired
    private INursingLevelService nursingLevelService;
    @Autowired
    private INursingPlanService nursingPlanService;
    @Autowired
    private INursingElderService nursingElderService;
    @Autowired
    private INursingProjectService nursingProjectService;


    /**
     * 查询护理任务
     *
     * @param id 护理任务主键
     * @return 护理任务
     */
    @Override
    public NursingTask selectNursingTaskById(Long id) {
        return getById(id);
    }

    /**
     * 查询护理任务列表
     *
     * @param dto 护理任务
     * @return 护理任务
     */
    @Override
    public List<pageVO> selectNursingTaskList(pageDto dto) {

        PageResult<NursingTask> pageResult = new PageResult<>();
        pageResult.setPage(dto.getPageNum());
        pageResult.setPageSize(dto.getPageSize());
        List<pageVO> nursingTasks = nursingTaskMapper.selectNursingTask(dto);

        return nursingTasks;
    }

    /**
     * 新增护理任务
     *
     * @param nursingTask 护理任务
     * @return 结果
     */
    @Override
    public int insertNursingTask(NursingTask nursingTask) {
        return save(nursingTask) ? 1 : 0;
    }

    /**
     * 修改护理任务
     *
     * @param nursingTask 护理任务
     * @return 结果
     */
    @Override
    public int updateNursingTask(NursingTask nursingTask) {
        return updateById(nursingTask) ? 1 : 0;
    }

    /**
     * 批量删除护理任务
     *
     * @param ids 需要删除的护理任务主键
     * @return 结果
     */
    @Override
    public int deleteNursingTaskByIds(Long[] ids) {
        return removeByIds(Arrays.asList(ids)) ? 1 : 0;
    }

    /**
     * 删除护理任务信息
     *
     * @param id 护理任务主键
     * @return 结果
     */
    @Override
    public int deleteNursingTaskById(Long id) {
        return removeById(id) ? 1 : 0;
    }

    /**
     * 生成月度护理任务
     *
     * @param elder 老人信息
     */
    @Override
    public void generateMonthlyTask(Elder elder) {
        // 基础校验1：校验
        if (elder == null || elder.getId() == null) {
            log.error("老人不能为空");
            return;
        }

        // 基础校验2：获取入住信息
        CheckIn checkIn = checkInService.lambdaQuery().eq(CheckIn::getElderId, elder.getId()).one();
        if (ObjectUtil.isEmpty(checkIn)) {
            log.error("入住信息不能为空");
            return;
        }

        // 基础校验3：获取入住及入住配置信息
        CheckInConfig checkInConfig = checkInConfigService.lambdaQuery().eq(CheckInConfig::getCheckInId, checkIn.getId()).one();
        if (ObjectUtil.isEmpty(checkInConfig)) {
            log.error("入住配置不能为空");
            return;
        }

        // 基础校验4：护理等级
        NursingLevel nursingLevel = nursingLevelService.selectNursingLevelById(checkInConfig.getNursingLevelId());
        if (ObjectUtil.isEmpty(nursingLevel)) {
            log.error("护理等级不能为空");
            return;
        }

        // 基础校验5：护理计划
        NursingPlanVo nursingPlanVo = nursingPlanService.selectNursingPlanById(nursingLevel.getLplanId());
        if (ObjectUtil.isEmpty(nursingPlanVo)) {
            log.error("护理计划不能为空");
            return;
        }

        // 基础校验6：护理计划项目计划列表
        List<NursingProjectPlanVo> projectPlans = nursingPlanVo.getProjectPlans();
        if (CollUtil.isEmpty(projectPlans)) {
            log.error("护理计划项目计划列表不能为空");
            return;
        }

        // 基础校验7：查询老人对应的护理员列表
        List<NursingElder> nursingElderList = nursingElderService.lambdaQuery().eq(NursingElder::getElderId, elder.getId()).list();
        if (CollUtil.isEmpty(nursingElderList)) {
            log.error("护理人员不能为空");
            return;
        }

        List<Long> list = nursingElderList.stream().map(NursingElder::getNursingId).collect(Collectors.toList());
        // 多个id用逗号分隔，转换为字符串
        String nursingIds = StringUtils.join(list, ",");

        // 查询所有的护理项目
        List<NursingProject> projectList = nursingProjectService.list();
        // 转换为map key是id,value是name
        Map<Long, String> nursingProjectMap = projectList.stream().collect(Collectors.toMap(NursingProject::getId, NursingProject::getName));

        // 开始时间
        LocalDateTime finalStartTime = LocalDateTime.now();

        // 组装护理任务
        List<NursingTask> nursingTasks = new ArrayList<>();
        projectPlans.forEach(planVo -> {
            // 执行频次
            Integer executeFrequency = Integer.valueOf(String.valueOf(planVo.getExecuteFrequency()));
            // 执行时间
            String executeTime = planVo.getExecuteTime();
            LocalTime localTime = LocalTime.parse(executeTime);
            // 开始执行时间
            LocalDateTime firstExecutionTime = LocalDateTime.of(finalStartTime.toLocalDate(), localTime);
            // 计算相差天数
            LocalDateTime monthEndTime = LocalDateTime.of(finalStartTime.getYear(), checkInConfig.getFeeStartDate().getMonth(), finalStartTime.toLocalDate().lengthOfMonth(), 23, 59);
            // 间隔天数
            //long diffDays = monthEndTime.toLocalDate().toEpochDay() - finalStartTime.toLocalDate().toEpochDay() + 1;
            long diffDays = Math.abs(LocalDateTimeUtil.between(finalStartTime, monthEndTime, ChronoUnit.DAYS));
            if ("0".equals(planVo.getExecuteCycle())) {
                // 日
                generateTaskByDay(firstExecutionTime, diffDays, nursingTasks, executeFrequency, elder, planVo, nursingIds, nursingProjectMap);
            } else if ("1".equals(planVo.getExecuteCycle())) {
                // 周
                generateTaskByWeek(firstExecutionTime, diffDays, nursingTasks, executeFrequency, elder, planVo, monthEndTime, nursingIds, nursingProjectMap);
            } else {
                // 月
                generateTaskByMonth(firstExecutionTime, monthEndTime, nursingTasks, executeFrequency, elder, planVo, nursingIds, nursingProjectMap);
            }
        });

        if (CollUtil.isEmpty(nursingTasks)) {
            return;
        }
        this.saveBatch(nursingTasks);
    }


    /**
     * 按月创建任务
     *
     * @param firstExecutionTime
     * @param monthEndTime
     * @param nursingTasks
     * @param executeFrequency
     * @param elder
     * @param v
     */
    private void generateTaskByMonth(LocalDateTime firstExecutionTime, LocalDateTime monthEndTime, List<NursingTask> nursingTasks, Integer executeFrequency, Elder elder, NursingProjectPlanVo v, String nursingIds, Map<Long, String> nursingProjectMap) {
        LocalDateTime executionTime = firstExecutionTime;
        Integer diffDay = (monthEndTime.plusSeconds(1).getDayOfMonth() - executionTime.getDayOfMonth()) / executeFrequency;
        for (int x = 0; x < executeFrequency; x++) {
            // 根据时间差和执行顺序计算每个任务的具体时间
            LocalDateTime seconds = executionTime.plusDays(diffDay * x);
            // 初始化护理任务对象
            NursingTask nursingTask = getNursingTask(elder, v, nursingIds, seconds, nursingProjectMap);
            // 将生成的任务添加到任务列表中
            nursingTasks.add(nursingTask);
        }
    }

    /**
     * 根据周为单位创建护理任务
     * <p>
     * 此方法旨在根据给定的开始时间、差异天数、执行频率等参数，为指定的老人生成护理任务列表
     * 它考虑了跨年情况以及每月结束时间的限制，避免生成越过月末的有效任务
     *
     * @param firstExecutionTime 首次执行时间，用于计算后续任务的时间点
     * @param diffDays           任务之间的时间差，以天为单位，此方法专注于周级别，故此值应与7的倍数有关
     * @param nursingTasks       护理任务列表，方法将新生成的任务添加到此列表中
     * @param executeFrequency   执行频率，决定每周内任务执行的次数
     * @param elder              老人信息对象，任务相关的老人信息由此对象提供
     * @param v                  护理项目计划的视图对象，包含项目ID等信息
     * @param monthEndTime       每月结束时间的限制，确保任务不会跨月生成
     * @param nursingIds         护理员ID列表，以字符串形式传递，用于分配任务给护理员
     */
    private void generateTaskByWeek(LocalDateTime firstExecutionTime, long diffDays, List<NursingTask> nursingTasks, Integer executeFrequency, Elder elder, NursingProjectPlanVo v, LocalDateTime monthEndTime, String nursingIds, Map<Long, String> nursingProjectMap) {
        int i;
        // 以7天为步长遍历差异天数，创建每周的任务
        for (i = 0; i < diffDays - 7; i = i + 7) {
            // 计算每周结束时间
            LocalDateTime dayEndTime = LocalDateTime.of(firstExecutionTime.plusDays(i + 7).toLocalDate(), LocalTime.of(23, 59));
            // 计算本周的执行起始时间
            LocalDateTime executionTime = firstExecutionTime.plusDays(i);
            // 根据执行频率计算时间差，用于确定本周内各任务的时间点
            Integer diffDay = (dayEndTime.plusSeconds(1).getDayOfYear() - executionTime.getDayOfYear()) / executeFrequency;
            // 根据执行频率生成本周的任务
            for (int x = 0; x < executeFrequency; x++) {
                // 根据时间差和执行顺序计算每个任务的具体时间
                LocalDateTime seconds = executionTime.plusDays(diffDay * x);
                // 初始化护理任务对象
                NursingTask nursingTask = getNursingTask(elder, v, nursingIds, seconds, nursingProjectMap);
                // 将生成的任务添加到任务列表中
                nursingTasks.add(nursingTask);
            }
        }

        // 处理边界情况，当i超过diffDays-7且小于diffDays时
        if (i > diffDays - 7 && i < diffDays) {
            // 计算到达diffDays时的结束时间
            LocalDateTime dayEndTime = LocalDateTime.of(firstExecutionTime.plusDays(i + 7).toLocalDate(), LocalTime.of(23, 59));
            // 如果结束时间与开始时间年份不同，则返回，避免跨年任务
            if (ObjectUtil.notEqual(dayEndTime.getYear(), firstExecutionTime.getYear())) {
                return;
            }
            // 计算执行时间
            LocalDateTime executionTime = firstExecutionTime.plusDays(i);
            // 计算时间差，确定任务时间点
            Integer diffDay = (dayEndTime.plusSeconds(1).getDayOfYear() - executionTime.getDayOfYear()) / executeFrequency;
            // 根据执行频率生成任务，直到月末
            for (int x = 0; x < executeFrequency; x++) {
                // 计算每个任务的时间
                LocalDateTime seconds = executionTime.plusDays(diffDay * x);
                // 如果任务时间超过月末结束时间，则停止生成
                if (seconds.isAfter(monthEndTime)) {
                    break;
                }
                // 初始化护理任务对象
                NursingTask nursingTask = getNursingTask(elder, v, nursingIds, seconds, nursingProjectMap);
                // 将生成的任务添加到任务列表中
                nursingTasks.add(nursingTask);
            }
        }

    }

/**
 * 按日创建任务
 * @param firstExecutionTime
 * @param diffDays
 * @param nursingTasks
 * @param executeFrequency
 * @param elder
 * @param v
 */
    /**
     * 根据天数创建护理任务
     * <p>
     * 该方法根据首次执行时间、任务间隔天数、护理任务列表、执行频率、老人信息和护理项目计划数据，
     * 创建一系列的护理任务。任务的创建以天为单位，直到达到任务间隔天数为止。
     *
     * @param firstExecutionTime 首次执行时间，标志着任务创建的起始时间
     * @param diffDays           任务间隔天数，确定需要创建任务的天数范围
     * @param nursingTasks       护理任务列表，创建的任务将被添加到此列表中
     * @param executeFrequency   执行频率，决定一天内任务执行的次数
     * @param elder              老人对象，包含执行任务的老人的信息
     * @param v                  护理项目计划数据对象，包含护理项目的相关信息
     */
    private void generateTaskByDay(LocalDateTime firstExecutionTime, long diffDays, List<NursingTask> nursingTasks, Integer executeFrequency, Elder elder, NursingProjectPlanVo v, String nursingIds, Map<Long, String> nursingProjectMap) {
        // 遍历每一天，从首次执行时间开始，直到达到任务间隔天数
        for (int i = 0; i < diffDays; i++) {
            // 计算每一天的任务执行起始时间
            LocalDateTime executionTime = firstExecutionTime.plusDays(i);
            // 确定当天任务执行的结束时间（当天的23:59）
            LocalDateTime dayEndTime = LocalDateTime.of(executionTime.toLocalDate(), LocalTime.of(23, 59));
            // 计算当天内每次执行任务之间的小时差，用于确定执行时间点
            Integer diffHour = (dayEndTime.plusSeconds(1).getHour() - executionTime.getHour()) / executeFrequency;
            // 根据执行频率创建任务
            for (int x = 0; x < executeFrequency; x++) {
                // 计算每个任务的具体执行时间
                LocalDateTime seconds = executionTime.plusHours(diffHour * x);
                // 创建新的护理任务对象
                NursingTask nursingTask = getNursingTask(elder, v, nursingIds, seconds, nursingProjectMap);
                // 将生成的任务添加到任务列表中
                nursingTasks.add(nursingTask);
            }
        }
    }

    /**
     * 获取护理任务对象
     *
     * @param elder
     * @param v
     * @param nursingIds
     * @param seconds
     * @return
     */
    private NursingTask getNursingTask(Elder elder, NursingProjectPlanVo v, String nursingIds, LocalDateTime seconds, Map<Long, String> nursingProjectMap) {
        NursingTask nursingTask = new NursingTask();
        // 设置任务状态
        nursingTask.setStatus(1);
        // 设置护理员ID列表
        nursingTask.setNursingId(Integer.valueOf(nursingIds));
        // 老人姓名
        nursingTask.setElderName(elder.getName());
        // 设置床位号
        nursingTask.setBedNumber(elder.getBedNumber());
        // 设置预估服务时间
        nursingTask.setEstimatedServiceTime(seconds);
        // 设置项目ID
        nursingTask.setProjectId(Integer.valueOf(v.getProjectId()));
        // 设置老人ID
        Long id = elder.getId();
        nursingTask.setElderId(Integer.valueOf(elder.getId().toString()));
        // 匹配护理项目
        nursingTask.setProjectName(nursingProjectMap.get(Long.valueOf(nursingTask.getProjectId())));
        // 设置任务类型
        nursingTask.setTaskType(2);
        return nursingTask;
    }

    /**
     * 取消护理任务
     *
     * @param dto
     */
    @Override
    public void cancelNursingTask(CancelNursingTaskDto dto) {
        //1.从登录信息中获取取消人的名称
        String userName = SecurityUtils.getLoginUser().getUser().getNickName();
        //2.更新护理任务表数据，取消任务
        this.lambdaUpdate().eq(NursingTask::getId, dto.getTaskId())
                .set(NursingTask::getCancelReason, dto.getReason())
                .set(NursingTask::getUpdateBy, userName)
                .set(NursingTask::getUpdateTime, LocalDateTime.now())
                .set(NursingTask::getStatus, 3)
                .update();
    }

    /**
     * 执行任务
     *
     * @param task
     */

    @Override
    public void doTask(TaskDto task) {
        String estimatedServerTime = task.getEstimatedServerTime();
        if (StrUtil.isBlank(estimatedServerTime)) {
            throw new BaseException("时间不能为空");
        }
        //转换时间格式
        DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime parse = LocalDateTime.parse(estimatedServerTime, dateTimeFormatter);
        //获取执行人名称
        String nickName = SecurityUtils.getLoginUser().getUser().getNickName();

        this.lambdaUpdate()
                .eq(NursingTask::getId, task.getTaskId())
                .set(NursingTask::getStatus, Constants.STATUS_NUM)
                .set(NursingTask::getRealServiceTime, parse)
                .set(NursingTask::getMark, task.getMark())
                .set(NursingTask::getUpdateTime, LocalDateTime.now())
                .set(NursingTask::getUpdateBy, nickName)
                .set(NursingTask::getTaskImage, task.getTaskImage())
                .update();
    }

    /**
     * 根据ID查询护理任务
     *
     * @param id
     * @return
     */
    @Override
    public NursingTaskDetailVO getNursingTaskById(Long id) {
        // 1. 参数校验
        if (id == null || id <= 0) {
            throw new BaseException("参数错误");
        }

        // 2. 查询数据
        NursingTaskDetailVO nursingTaskVO = nursingTaskMapper.getNursingTaskById(id);
        if (ObjectUtil.isEmpty(nursingTaskVO)) {
            throw new BaseException("未查询到数据");
        }

        // 3. 设置更新人
        String userName = SecurityUtils.getLoginUser().getUser().getUserName();
        nursingTaskVO.setUpdater(userName);

        // 4. 优化nursingName格式（拆分逗号分隔的ID为List<String>）
        String nursingIdStr = nursingTaskVO.getNursingId();
        if (StrUtil.isNotBlank(nursingIdStr)) {
            List<String> nursingNameList = Arrays.asList(nursingIdStr.split(","));
            nursingTaskVO.setNursingName(nursingNameList);
        } else {
            nursingTaskVO.setNursingName(Collections.emptyList());
        }
        return nursingTaskVO;
    }
}
